diff --git a/secure/misc/twitter.c b/secure/misc/twitter.c
index 062deab..0a02ba7 100644
--- a/secure/misc/twitter.c
+++ b/secure/misc/twitter.c
@@ -44,7 +44,8 @@
 // der Interactive.
 int allowed() {
 	return ARCH_SECURITY
-         || ( member(registered, getuid(this_interactive()))
+         || ( this_interactive()
+              && member(registered, getuid(this_interactive()))
               && secure_level() >= (query_wiz_level(geteuid(this_interactive())))
              ) ;
 }